* Fix Post.owner_profile in cases where initial owner struct contains id
only
* Assert node structure is complete enough at Post creation
* Fix get_followees() call in _main()
* Prefer importing from '.' rather than '.<submodule>' in __main__
* Fix name of instaloader_unittests ('-' is illegal in module names)
* Foreport 5fe2a70374
"Fix downloading of hashtags"
* Foreport 67ac8f3397
"Enforce being logged in for getting username by id"
